The Galeries de Paléontologie et d’Anatomie Comparée is done in a architectural style called ‘Naturalism’, sort of a generic term for Art Nouveau, Organic Architecture, and Expressionism. Art Nouveau was an anti-historical movement that was predominantly in Europe between 1890 and 1914, and as a style was developed by a generation, most likely as a response to the Industrial Revolution, who sought to create an art form appropriate to the new modern age.